ABI1 — Brassica oleracea var. botrytis

Summary

BoABI1 (BOLND125_C04P067160.1) on cauliflower chromosome 4 encodes a protein with a PPM-type phosphatase-like domain and is annotated with multiple molecular functions including abscisic acid binding, protein phosphatase regulator activity, sucrose-phosphate synthase activity, and kinase regulator activity. The gene is associated with diverse biological processes such as nectar secretion, actin cytoskeleton organization, regulation of cell wall cellulose biosynthesis, and small GTPase-mediated signal transduction. It localizes to the Arp2/3 protein complex, SCAR complex, and SWI-SNF complex. BoABI1 is linked to numerous agronomic traits including yield, seed viability, biomass yield, water use efficiency, stem diameter, inflorescence size, petal length, and responses to water stress, flooding, and powdery mildew. Related genes in other species connect the family to ABA-mediated stomatal closure, heat tolerance, cold stress tolerance, and lateral root development.